Shift Concerns: No 1-2 Shift (Automatic)

WARNING: This page is about a different variant/trim than selected.

POSSIBLE COMPONENT REFERENCE CHART

Possible Component	Reference/Action
220 - ELECTRICAL ROUTINE
Powertrain Control System	Run On-Board Diagnostic (OBD). Refer to INTRODUCTION article for diagnosis. Go to PINPOINT TEST A and Go to PINPOINT TEST D .
Electrical inputs/outputs, vehicle wiring harnesses, PCM, Shift Solenoid C (SSC) and Transmission Range (TR) sensor
320 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures	Check pressure at pressure tap. Carry out Line Pressure Test. Refer to SPECIAL TESTING PROCEDURES in this service information. See the LINE PRESSURE CHART for specifications. If not OK, check main control. Refer to MAIN CONTROL VALVE BODY in this service information.
Line pressure
Main Control Valve Body
Bolts out of torque specification	Tighten bolts to specification.
Gaskets and separator plate - damaged, off location	Inspect for damage. Install new as required.
Intermediate regulator valve, springs, clips - loose, stuck, missing, misassembled stuck off	Inspect for damage. Repair or install new as required.
SSC not functioning correctly	Activate solenoid using scan tool. Refer to OUTPUT STATE CONTROL (OSC) MODE in this service information. Go to PINPOINT TEST A . Install a new solenoid as required. Refer to SOLENOIDS in this service information. Download a new solenoid body strategy into the PCM. Refer to SOLENOID BODY STRATEGY in this service information.
Intermediate Clutch Assembly - Failed Off
Seals - damaged	Inspect for damage. Install new as required.
Piston - damaged	Inspect for damage. Install new as required.
Friction - damaged, worn	Inspect for damage. Install new as required.
Cylinder hub - damaged	Inspect for damage. Install new as required.
Return spring assembly - damaged	Inspect for damage. Install new as required.
Low/Reverse Clutch Assembly - Failed On
Piston - damaged	Inspect for damage. Install new as required.
Friction - overheated	Inspect for damage. Install new as required.
Cylinder hub - damaged	Inspect for damage. Install new as required.
Return spring assembly - damaged	Inspect for damage. Install new as required.
Pump Assembly
Worn/cross leaks	Inspect for damage. Install new as required.
Component damaged	Inspect for damage. Install a new pump assembly as required.
Low One-Way Clutch Assembly	Inspect for damage. Install new as required.
Not overrunning, damaged	Inspect for damage. Install new as required.
Planetary Carrier	Inspect for damage. Install new as required.
Damaged	Inspect for damage. Install new as required.